fix gpu hotplugging while VT switched

[Chris Wilson]

On Wed, Apr 10, 2013 at 04:38:48PM +1000, Dave Airlie wrote:
> Maarten mentioned that they were seeing problems with two X servers
> running and hotplugging the USB output devices.
> 
> This set adds a cleaner interface for vt owner, it also
> uses it to queue output devices.

Series does what it says on the tin,
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre